Transgo Shift Kit Install TH400 Turbo 400 Hydra-Matic
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- Опубликовано: 9 авг 2017
- Trying a different brand of shift kit in a Turbo 400 Trans rather than what I normally use. This trans is to be used in the TA. Turned out I didn't like the combo i used in this vid and went a different direction in the shift kit department.
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Awesome video. Incredibly helpful. I'm about to do this on my transmission and this has given me a lot more confidence.
I'm not a fan of the TransGo kit. I made a video later and replaced it with a B&M kit.
Way easier than the way I usually do it(in the car,lol). Great video brother. 👍🏻
Nice kits and easy to put in. I use them on almost every thing I built.
So, I'm rebuilding a TH400 out of a 70 buick. The poor thing was put through a demolition derby. I'm currently doing a complete overhaul so that I can use it for my daily driver.
The post/stud/shaft for the valve body accumulator piston in this video comes with this TransGo kit? What particular kit is it?
The snapring for mine broke and ended up in the oil pan. The stud is all chewed up, and so far the only place I've seen them available is through this kit you use. Any information you can provide regarding procurement of this part would be very helpful.
Thank you!
Did you put that ball bearing that flu out on top of the spring back in?
Just discovered your channel. Great work! Thanks for doing this video and providing a better perspective on the install of this kit. You get a much better view of the process and components from this vantage point versus under the car. I know it's been awhile since you've done this video but could I ask you a few questions? I know you built this for tire shredding but could you please describe what your part throttle shifts are like on the street? Are they loud, hard, and screeching every single time with the feed holes drilled to .156? Are you using a higher stall converter than stock? Thank you!
The way I installed that kit it had really harsh DOWNSHIFTS. Fairly weak upshifts. I took it out and replaced it with a B&M kit that works great. I have a video on that. The car has a seemingly stock converter in it so it gets great upshifts. The looser the converter the less you feel the shift.
I used a Transgo kit on two transmissions, a Turbo 350 in my V8 Vega, it would black marks 2nd to 3rd shift and a kit for my 454 Chevelle Turbo 400 black marks 2nd to 3rd shifts as well. The felt type filter needs to go on the 400, I used the small Turbo 350 hydraulic screen filter for better fluid pick up.
I bought a car with a shift kit recently installed and found that the kickdown switch on the throttle is missing. It's a 1967 that had the 2 speed converter feature. Would adding a shift kit be a reason someone would delete that part ? Just rebuilt the engine and haven't driven it yet so unsure whether it kicks down properly or not. When power is put to the wire connector at the firewall for the kickdown solenoid I can hear it click. . But I am missing the actual switch that mounts to the throttle.
Anyway to get a copy of the paper instructions? Thanks
Tire shredding shifts 👍
The classy shift explains my buddy's car back in the day driving around normally you would never know the car had a shift kit but once you put your foot into it that sum bitch would break u-joints lol
Hey if anyone has a shift kit like that. See if it’s a fairbanks. Back in the day it cost $75.00 for master kit. And $9.99 for shift kit. B&m was $25.00, but what people didn’t know was fairbanks was a better kit it utilized your own shift plate and direction to drill it yourself. Make it mild to very hot
Well done. So at .156 drill size you like the result.? I want some good bark at mid range.
This couldn't have come at a better time. I've got the reprogramer kit for my th350.
Thanks for sharing the info man 🍺🍺
Thanks for the video .I have a th400 that only shifts at high rpms don't shift at normal driving or manually. I check governor and everything was fine shaft moves and the plastic gear is complete. Changed the vacuum modulator and still nothing. Any idea as to what it could be?any help would be appreciated..
Had same issue, was a split in the vacuum line. Check you have Vac where the tube plugs into the modulator at idle.
The 400 is an awesome transmission. Got one in my 3/4 ton Chevy thats built too 900 HP and 700 Ft Lb.
I’m sure you’ve realized when you skip the modified 1-2 shift valve and plugging the 1-2 bore exhaust hole you can not manually hold first gear. The TH400 will shift for you even if the shifter is in low gear without this upgrade.
@headflowinc so if you have it in first gear and floor it it will swift to 2nd when the time is right. will it go thew all the gears and the sifter is still in first
@@louisgreenberg5384 no, it will go into second gear, I have never seen one go into third while in low 1.
The governor shifts it to 2nd, so if you want it to shift at higher RPM you need stronger springs in the governor or lighter flyweights.
Exactly! Defeats the purpose of having a Hurst Dual Gate shifter, if you can’t hold the gear manually. The TH-400 is engineered to shift up automatically at around 3,400 RPM in order to safeguard the Tranny and engine.
What was the trans. book you referenced ?
How to Work with and Modify the Turbo Hydra-Matic 400 Transmission by Ron Sessions. It can be found on Amazon.
Good video would have done the 1st to 2nd overide
Hi brother I've been watching your videos when it comes to Turbo 400 I need your advice my 69 Firebird has a turbo 400 I change the fluid and filter in the summer now is cold here in Pennsylvania and know the car have a whining sound coming from the transmission when the car warms up the whining sound almost goes away do you have any idea what can that be I used a filter that has like a material on it I heard the brass filter are better please help me thanks
Heres what the troubleshooting section says. Take the belts off and run it to be sure the noise is from the transmission. If not then could be oil pump cavitation for a number of reasons. Could be a bad converter or front pump assembly malfunction. Get the book How to work with and modify the Turbo Hydra-matic 400 transmission. It's worth its weight in gold.
@@Oldsmob455 thank you so much I really appreciate your help the plans for the 69 Firebird is a 400 engine that I am picking up this weekend and I am picking up a turbo 400 transmission that has been gone through but of course I would love to learn how to fix these transmission which I have on both of my Firebird and I picked up a original 400 hood for the 69 bird so that's the plan will make a video as soon as I can once again thank you
@@Oldsmob455 hi my Firebird brother today I dropped the pan on the Turbo 400 oil look good filter looks good I just changed the filter and the oil on this transmission less than 5 months ago once the car was ready to be driven on the road I was a little low on fluid so I topped it off I did what you told me to do take off the belt and definitely it was the transmission whining so once I was done I turned on the car let it come up to operating temperature the whining noise did go down a little less noise but if you put the car on low gear and hit the gas the whining noise is louder I guess I will have to be rebuilding this Turbo 400 thank you for all your help if you ever need help finding parts for your Firebird believe me I know a lot of people and you have been a big help to me so I will be willing to help you thank you
Why didn't you like it? What did you replace it with? Would you have liked it better if you would have used all options.
I think I would have liked it better if I installed the "race" line pressure spring. It was replaced with a trusty B&M Transpak. The harsh downshifts were gone after this.
Did you feel the clutches and bands were satisfactory or are you going to address that later?
It worked fine and didn't slip. It's satisfactory for now.
now its there going to engage quicker and stop that soft mushy gear shift for pussys that burns up clutches for comfort..... you know i always have to have something to say :)
Did you prefer a different kit to the Transgo?
Yes, the B&M transpak.
What transmission book do you use?
Ron Sessions th400. Great book
What didn't you like about the way it shifted?
Downshift was harsh. Upshift sucks. If I was to use this kit again I'd stick in the "race only" pressure spring.
Check out one of my latest vids, 1973 trans am last start 2020. I take it for a ride and bark the tires in between gears.
@@Oldsmob455 I have been told transgo is conservative on the shift. Do you remember how big you drilled the b&m plate? I think it calls for 3/16 on both feed holes. I had a b&m transpak in a th400 and I liked it, it did bust two bellhousings, but I'm not sure why. I think I had the drivetrain angle all screwed up because I put it in a 79 cutlass and made a double hump cross member hour of a chevelle cross member. I put the shift kit in my buddies 79 cutlass after I went back to a th350 and he never had any trouble with his 400. I honestly just don't know why it was busting bellhousings in mine and not his. The b&m transpak was great.
@@inscoredbz As I recall the transpak comes with the drill bit. I saw a bellhousing on a th400 break once behind a wheel standing nitrous injected 750hp ish motor with slicks on the back.
Always use a new metal servo cover gasket it will leak if you don't it's a one time use only.
7:29 = "Thumbs Up" emoji.
Transgo🏁🙌🏆🍻🐎🐂
Helo would love to chat more I'm so new to this
h. ow
Dont ever double oring anything. Only asking for problems
thats the fix for the common leaky seal at the filter man.. commonly done, works great
Ok if you say so. I guess double oring on oil filter works great also. Generally if you have two seals on something then it will leak pass the oring. I will let you do that I’ll just keep to a single seal . Thank you for your input
Agreed. It is designed to only have one o-ring.
You’re re-tarded, it’s under vacuum not pressure. You need to double o-ring the tube on these or they leak air into the pump suction. You also use the screen filter, not a paper media one. You'll literally burn the tranny up at high revs because of lack of fluid to keep the clutches and bands clamped. If you want to fry the tranny when you’re racing with it do what you say.